That'll get hardly none of the proceedings since nearly all of it is pocketed by the callers. Donate at your own convenience to a reliable source, not random callers, if you donate at all. Otherwise, ignore the number altogether, random callers are probably scammers in disguise that know the DNC doesn't cover fundraisers. They use junk like sheriff's association and police charities, children's cancer, disabled firefighters, and drunk driving, etc.,. to try and bilk you.
There is a Camden-Wyoming, Delaware, but I agree. It's another scam. I also agree with Ned. Never give money to a caller, even if they really are from the non-profit, there are a lot safer ways to give for the organization and for your privacy.